﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Reflection;


namespace UpdataMyGame
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void btnUpdate_Click(object sender, EventArgs e)
        {
            try
            {
                WebClient webClient = new WebClient();
                webClient.DownloadFile("http://localhost/Web/update.txt", "update.txt");

                StreamReader sr = new StreamReader("update.txt");

                List<UpdateFile> files = new List<UpdateFile>();

                string version = sr.ReadLine();
                //将应用程序更名拷贝
                File.Copy(@"MyGame.exe", "MyGame_old.exe", true);
                //反射备份的应用程序 得到版本号
                Assembly assembly = Assembly.LoadFile(Application.StartupPath + @"\MyGame_old.exe");
                string currentVersion = assembly.GetName().Version.ToString();
                assembly = null;
                //如果版本号不一致 升级程序
                if (currentVersion != version)
                {
                    //读出有几个文件需要更新
                    int newFileCount = int.Parse(sr.ReadLine());

                    for (int i = 0; i < newFileCount; i++)
                    {
                        //取得文件下载路径和文件名
                        UpdateFile updateFile = new UpdateFile();
                        updateFile.FileName = sr.ReadLine();
                        updateFile.DownLoadPath = sr.ReadLine();
                        files.Add(updateFile);
                    }

                    foreach (UpdateFile file in files)
                    {
                        WebClient webClientNew = new WebClient();
                        //更新每个文件 - 注意web服务器的配置
                        webClientNew.DownloadFile(file.DownLoadPath, file.FileName);
                    }
                    MessageBox.Show("升级成功！");
                }
                else
                {
                    MessageBox.Show("您的游戏已经是最新版本！");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
    }
}